Test Notes

NORMAL OPERATION
The air bag diagnostic monitor measures the resistance between Pin 22 (Circuit 622, T/BK) and Pin 3 (Circuit 57, BK, diagnostic monitor reference ground). If the air bag diagnostic monitor measures a difference of more than 2.0 ohms between Pin 22 and Pin 3, it will flash out diagnostic trouble code 46.

Note that Circuit 622 (T/BK) is attached to the side of the LH primary crash sensor case. In addition, the case is grounded to the vehicle. Note that the T/BK wire changes to P/LG at the LH primary crash sensor connector.

POSSIBLE CAUSES
High resistance on Pin 22 (Circuit 622, T/BK) to ground can be caused by:

1. A poor connection due to loose mounting or dirt at the LH primary crash sensor mounting location.

2. An open or damaged wire in Circuit 622 (T/BK) from Pin 22 of the air bag diagnostic monitor harness connector to LH primary crash sensor.

3. An open circuit inside LH primary crash sensor.